In a small bowl, mix together flour, baking powder, baking soda and salt.

In a bowl, using an electric mixer, beat together sugar and oil until well combined. Add egg whites, one at a time, beating well after each addition. Beat in vanilla and melted chocolate. Alternately beat in flour mixture and buttermilk, making three additions of flour mixture and two of buttermilk, beating until smooth. Beat in chocolate liqueur.

Scoop batter into 12 muffin cups lined with paper liners. Bake in preheated 350-degree oven 20 to 25 minutes or until tops of cupcakes spring back when lightly touched. Let cool in pan on rack for 5 minutes. Remove cupcakes from pan.

While cupcakes are still hot, using a spoon, scoop a hole in the top of each cupcake, scooping down to the center. Push a marshmallow into each hole. Don’t worry if marshmallows stick up a bit from top of cupcakes. The heat of cupcakes will soften marshmallows. (Discard scooped out cupcake or save to nibble on.) Let cool completely on rack. Top cooled cupcakes with Chocolate Fudge Frosting. Makes 12 cupcakes.

Note: The recipe says to let the cupcakes cool in the pan for five minutes before scooping out the center. Don’t wait–I did on the first batch and by then they were too cool to melt the marshmallows. Just scoop straight from the oven.

I’m not sure where this recipe is from. It was in my binder of printed recipes.